JP2015120681A - Benzylphenylphenoxy compound, resin composition for optical material containing the same, and cured product obtained by curing the composition - Google Patents

Benzylphenylphenoxy compound, resin composition for optical material containing the same, and cured product obtained by curing the composition Download PDF

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JP2015120681A
JP2015120681A JP2014233696A JP2014233696A JP2015120681A JP 2015120681 A JP2015120681 A JP 2015120681A JP 2014233696 A JP2014233696 A JP 2014233696A JP 2014233696 A JP2014233696 A JP 2014233696A JP 2015120681 A JP2015120681 A JP 2015120681A
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benzylphenylphenoxy
resin composition
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JP6437798B2 (en
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成寿 吉田
Shigetoshi Yoshida
成寿 吉田
優 青木
Masaru Aoki
優 青木
弘之 細井
Hiroyuki Hosoi
弘之 細井
直城 小宮
Naoki Komiya
直城 小宮
晃二 村田
Koji Murata
晃二 村田
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Kyoeisha Chemical Co Ltd
Sanko Co Ltd
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Sanko Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a benzylphenylphenoxy compound which has a high refractive index, an excellent dilution property, and excellent temporal stability.SOLUTION: The benzylphenylphenoxy compound is represented by formula (I) [where Rand Reach represent a hydrogen atom or a methyl group; t and u each represent an integer of 0-3; R, R, and Reach represent a C1-C10 hydrocarbon group; and a1, a2, and a3 each represent an integer of 0-4].

Description

本発明はベンジルフェニルフェノキシ化合物、及びそれを含む光学材料用樹脂組成物に関し、より詳細には、高屈折率コーティング材料等に好適な光学材料用樹脂組成物及びその硬化物に関する。   The present invention relates to a benzylphenylphenoxy compound and a resin composition for an optical material containing the same, and more particularly to a resin composition for an optical material suitable for a high refractive index coating material and a cured product thereof.

液晶テレビ、ノートパソコン、携帯ゲーム機、携帯電話等の液晶表示装置は、小型化、高輝度化の要求が高くなっており、これらの性能を実現するためには、プリズムシートの高屈折率化が不可欠であることがわかっている。また、液晶表示装置の表面に施すハードコート剤は、反射防止性を向上させるために高屈折率の樹脂材料が要求されている。さらに、眼鏡レンズ、光ファイバー等の光学部材においても、反射防止性能を付与するため、高屈折率の樹脂材料が要求されている。   Liquid crystal display devices such as LCD TVs, notebook computers, portable game machines, and mobile phones are increasingly required to be smaller and have higher brightness. To achieve these performances, the prism sheet must have a higher refractive index. Is known to be essential. In addition, a hard coating agent applied to the surface of a liquid crystal display device requires a high refractive index resin material in order to improve antireflection properties. Furthermore, optical members such as eyeglass lenses and optical fibers are also required to have a high refractive index resin material in order to impart antireflection performance.

上述のように、高屈折率の樹脂材料のニーズは、幅広い用途で存在し、それ故これまで高屈折率の樹脂材料を提供する試みがなされてきた。   As mentioned above, the need for high refractive index resin materials exists in a wide range of applications, and thus attempts have been made to provide high refractive index resin materials.

例えば、特許文献1(特開2010−248358号公報)及び特許文献2(特開2013−053310号公報)は、高屈折率の樹脂材料として、フルオレン骨格を有する二官能アクリレート化合物を開示している。また、特許文献3(特開2012−082387号公報)には、高屈折率の樹脂材料として、以下に示す化合物が開示されている。

Figure 2015120681
For example, Patent Document 1 (Japanese Patent Laid-Open No. 2010-248358) and Patent Document 2 (Japanese Patent Laid-Open No. 2013-053310) disclose a bifunctional acrylate compound having a fluorene skeleton as a high refractive index resin material. . Patent Document 3 (Japanese Patent Application Laid-Open No. 2012-082387) discloses the following compounds as resin materials having a high refractive index.
Figure 2015120681

特開2010−248358号公報JP 2010-248358 A 特開2013−053310号公報JP 2013-053310 A 特開2012−082387号公報JP 2012-082387 A

フルオレン骨格を有する多官能アクリレート化合物は、高屈折率である一方で非常に高粘度のため、取り扱いにはモノマー希釈による低粘度化が不可避である。従来の希釈モノマーは屈折率が低く、得られる樹脂の屈折率が低下しやすいというデメリットがあった。また、各種用途の市場ニーズにおいて、さらなる高屈折率の原材料の登場が待望されている。   Since the polyfunctional acrylate compound having a fluorene skeleton has a high refractive index and a very high viscosity, it is inevitable to reduce the viscosity by dilution of the monomer for handling. Conventional dilution monomers have the disadvantage that the refractive index is low and the refractive index of the resulting resin tends to decrease. In addition, with the market needs for various applications, the appearance of raw materials with even higher refractive index is awaited.

本発明は、上記現状に鑑みてなされたものであり、その目的とするところは、高屈折率であって、希釈性に優れ、かつ経時安定性に優れたベンジルフェニルフェノキシ化合物を提供することである。当該ベンジルフェニルフェノキシ化合物を含む本発明の光学材料用樹脂組成物は、液状物に調製しやすいため、取り扱いが簡便であるという優れた効果を示す。   The present invention has been made in view of the above-mentioned present situation, and its object is to provide a benzylphenylphenoxy compound having a high refractive index, excellent dilutability, and excellent stability over time. is there. Since the resin composition for optical materials of the present invention containing the benzylphenylphenoxy compound is easy to prepare into a liquid material, it exhibits an excellent effect that it is easy to handle.

本発明は、以下の発明を含む。
〔1〕下記式(I)で表されるベンジルフェニルフェノキシ化合物。

Figure 2015120681
[前記式(I)中、
1及びR2は、それぞれ、水素原子又はメチル基を表す。
t及びuは、それぞれ、0〜3の整数を表す。
a、Rb及びRcは、それぞれ、炭素数1〜10の炭化水素基を表す。
a1、a2及びa3は、0〜4の整数を表す。]
〔2〕下記式(II)で表される〔1〕に記載のベンジルフェニルフェノキシ化合物。
Figure 2015120681
[式(II)中、
1は水素原子又はメチル基を表す。
uは、0〜3の整数を表す。
a、Rb及びRcは、それぞれ、炭素数1〜10の炭化水素基を表す。
a1、a2及びa3は、0〜4の整数を表す。]
〔3〕下記式(III)で表される〔2〕に記載のベンジルフェニルフェノキシ化合物。
Figure 2015120681
[前記式(III)中、R1は水素原子又はメチル基を表す。]
〔4〕〔1〕〜〔3〕に記載のベンジルフェニルフェノキシ化合物を含む光学材料用樹脂組成物。
〔5〕〔4〕記載の光学材料用樹脂組成物100重量部に対し、60重量部以上100重量部未満の前記ベンジルフェニルフェノキシ化合物を含む、〔4〕に記載の光学材料用樹脂組成物。
〔6〕さらに、前記ベンジルフェニルフェノキシ化合物と共重合可能なモノマーであって、かつアクリル酸誘導体及びメタクリル酸誘導体からなる群より選ばれる1種以上のモノマーを含有する、〔4〕又は〔5〕に記載の光学材料用樹脂組成物。
〔7〕25℃における屈折率が1.570以上である、〔4〕〜〔6〕のいずれか記載の光学材料用樹脂組成物。
〔8〕さらに、光重合開始剤又は熱重合開始剤を含有する、〔4〕〜〔7〕のいずれか記載の光学材料用樹脂組成物。
〔9〕〔4〕〜〔8〕のいずれか記載の光学材料用樹脂組成物を、光又は熱によって共重合させた硬化物。 The present invention includes the following inventions.
[1] A benzylphenylphenoxy compound represented by the following formula (I).
Figure 2015120681
[In the formula (I),
R 1 and R 2 each represent a hydrogen atom or a methyl group.
t and u each represent an integer of 0 to 3.
R a , R b and R c each represent a hydrocarbon group having 1 to 10 carbon atoms.
a1, a2 and a3 represent an integer of 0 to 4; ]
[2] The benzylphenylphenoxy compound according to [1] represented by the following formula (II).
Figure 2015120681
[In the formula (II),
R 1 represents a hydrogen atom or a methyl group.
u represents an integer of 0 to 3.
R a , R b and R c each represent a hydrocarbon group having 1 to 10 carbon atoms.
a1, a2 and a3 represent an integer of 0 to 4; ]
[3] The benzylphenylphenoxy compound according to [2] represented by the following formula (III).
Figure 2015120681
[In the formula (III), R 1 represents a hydrogen atom or a methyl group. ]
[4] A resin composition for an optical material comprising the benzylphenylphenoxy compound according to [1] to [3].
[5] The resin composition for optical materials according to [4], comprising 60 parts by weight or more and less than 100 parts by weight of the benzylphenylphenoxy compound with respect to 100 parts by weight of the resin composition for optical materials according to [4].
[6] The monomer further copolymerizable with the benzylphenylphenoxy compound, and contains at least one monomer selected from the group consisting of acrylic acid derivatives and methacrylic acid derivatives, [4] or [5] The resin composition for optical materials described in 1.
[7] The resin composition for optical materials according to any one of [4] to [6], wherein the refractive index at 25 ° C. is 1.570 or more.
[8] The resin composition for optical materials according to any one of [4] to [7], further comprising a photopolymerization initiator or a thermal polymerization initiator.
[9] A cured product obtained by copolymerizing the resin composition for optical materials according to any one of [4] to [8] with light or heat.

本発明のベンジルフェニルフェノキシ化合物は、高屈折率であって、希釈性に優れ、かつ経時安定性に優れる。当該ベンジルフェニルフェノキシ化合物を含む本発明の光学材料用樹脂組成物は、液状物に調製しやすいため、取り扱いが簡便であるという優れた効果を示す。   The benzylphenylphenoxy compound of the present invention has a high refractive index, excellent dilutability, and excellent temporal stability. Since the resin composition for optical materials of the present invention containing the benzylphenylphenoxy compound is easy to prepare into a liquid material, it exhibits an excellent effect that it is easy to handle.

<ベンジルフェニルフェノキシ化合物>
本発明のベンジルフェニルフェノキシ化合物は、下記式(I)で表される。

Figure 2015120681
[前記式(I)中、
1及びR2は、それぞれ、水素原子又はメチル基を表す。
t及びuは、それぞれ、0〜3の整数を表す。
a、Rb及びRcは、それぞれ、炭素数1〜10の炭化水素基を表す。
a1、a2及びa3は、0〜4の整数を表す。] <Benzylphenylphenoxy compound>
The benzylphenylphenoxy compound of the present invention is represented by the following formula (I).
Figure 2015120681
[In the formula (I),
R 1 and R 2 each represent a hydrogen atom or a methyl group.
t and u each represent an integer of 0 to 3.
R a , R b and R c each represent a hydrocarbon group having 1 to 10 carbon atoms.
a1, a2 and a3 represent an integer of 0 to 4; ]

上記式(I)中のRa、Rb及びRcにおける炭化水素基は、炭素数1〜10のアルキル基、炭素数3〜10の脂環式炭化水素基、炭素数6〜10の芳香族炭化水素基等が挙げられる。
上記のアルキル基としては、メチル基、エチル基、プロピル基、ブチル基、ペンチル基、ヘキシル基、ヘプチル基、オクチル基のような直鎖状アルキル基;iso−ブチル基、tert−ブチル基のように分岐状アルキル基が挙げられる。
上記の脂環式炭化水素基としては、シクロペンチル基、シクロへキシル基、シクロヘプチル基、シクロオクチル基等の単環式の脂環式炭化水素基;アダマンチル基、ノルボルニル基等の多環式の脂環式炭化水素基が挙げられる。
上記の芳香族炭化水素基としては、フェニル基、p−メチルフェニル基、tert−ブチルフェニル基等が挙げられる。
t及びuは、0〜2であることが好ましく、より好ましくは0又は1であり、さらに好ましくは0である。t及びuの整数値が小さいほど、分子内に占めるベンゼン環の割合が多くなるため、高屈折率の化合物を得ることができる。
a1、a2及びa3は、1以上であってもよいが、高屈折率のベンジルフェニルフェノキシ化合物を得る観点からは、0であることが好ましい。ベンジルフェニルフェノキシ化合物に含まれるベンゼン環に置換基がないことにより、化合物中のベンゼン環の割合を多くすることができ、屈折率を高めることができる。本発明のベンジルフェニルフェノキシ化合物は、分子構造中に硫黄原子及びハロゲン原子を含まないことにより、臭気や経時の色味の変化を抑えることができる。
a1が2以上の場合、複数のRaはそれぞれ同一又は相異なり、a2が2以上の場合、複数のRbはそれぞれ同一又は相異なり、a3が2以上の場合、複数のRcはそれぞれ同一又は相異なる。
The hydrocarbon group in R a , R b and R c in the above formula (I) is an alkyl group having 1 to 10 carbon atoms, an alicyclic hydrocarbon group having 3 to 10 carbon atoms, and an aromatic having 6 to 10 carbon atoms. Group hydrocarbon group and the like.
Examples of the alkyl group include linear alkyl groups such as methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl and octyl; iso-butyl and tert-butyl. Includes a branched alkyl group.
Examples of the alicyclic hydrocarbon group include monocyclic alicyclic hydrocarbon groups such as cyclopentyl group, cyclohexyl group, cycloheptyl group, and cyclooctyl group; polycyclic groups such as adamantyl group and norbornyl group. An alicyclic hydrocarbon group is mentioned.
Examples of the aromatic hydrocarbon group include a phenyl group, a p-methylphenyl group, and a tert-butylphenyl group.
t and u are preferably 0 to 2, more preferably 0 or 1, and still more preferably 0. As the integer values of t and u are smaller, the proportion of benzene rings in the molecule increases, so that a compound with a high refractive index can be obtained.
a1, a2 and a3 may be 1 or more, but 0 is preferable from the viewpoint of obtaining a benzylphenylphenoxy compound having a high refractive index. Since there is no substituent in the benzene ring contained in the benzylphenylphenoxy compound, the proportion of the benzene ring in the compound can be increased, and the refractive index can be increased. Since the benzylphenylphenoxy compound of the present invention does not contain a sulfur atom and a halogen atom in the molecular structure, it can suppress changes in odor and color with time.
When a1 is 2 or more, a plurality of R a are the same or different, and when a2 is 2 or more, a plurality of R b are the same or different, and when a3 is 2 or more, a plurality of R c are the same Or different.

上記tが0である以下の式(II)で表されるベンジルフェニルフェノキシ化合物が好ましい。tが0であることにより、化学構造的に合成しやすいという利点がある。

Figure 2015120681
[式(II)中、
1は水素原子又はメチル基を表す。
uは、0〜3の整数を表す。
a、Rb及びRcは、それぞれ、炭素数1〜10の炭化水素基を表す。
a1、a2及びa3は、0〜4の整数を表す。] A benzylphenylphenoxy compound represented by the following formula (II) wherein t is 0 is preferred. When t is 0, there is an advantage that the chemical structure is easy to synthesize.
Figure 2015120681
[In the formula (II),
R 1 represents a hydrogen atom or a methyl group.
u represents an integer of 0 to 3.
R a , R b and R c each represent a hydrocarbon group having 1 to 10 carbon atoms.
a1, a2 and a3 represent an integer of 0 to 4; ]

上記t、u、a1、a2及びa3がいずれも0である以下の式(III)で表されるベンジルフェニルフェノキシ化合物であることが好ましい。かかる化合物は、屈折率が高い上に、化学構造的に合成しやすいというメリットもある。

Figure 2015120681
[前記式(III)中、R1は水素原子又はメチル基を表す。] The t, u, a1, a2 and a3 are preferably benzylphenylphenoxy compounds represented by the following formula (III) in which all are 0. Such a compound has an advantage that it has a high refractive index and is easily synthesized chemically.
Figure 2015120681
[In the formula (III), R 1 represents a hydrogen atom or a methyl group. ]

かかるベンジルフェニルフェノキシ化合物は、高屈折率の硬化膜を形成するための光学材料用樹脂組成物に好適に用いられる。本発明の化合物を含む光学材料用樹脂組成物は、従来の化合物に比して、経時安定性に優れる上に、屈折率も高いという性質を示す。   Such a benzylphenylphenoxy compound is suitably used for a resin composition for an optical material for forming a cured film having a high refractive index. The resin composition for an optical material containing the compound of the present invention is excellent in stability with time and high in refractive index as compared with conventional compounds.

式(1)で表される化合物が高屈折率を示す理由はおそらく、1分子中に含まれるベンゼン環の割合が多いことによるものと考えられる。つまり、ベンゼン環は比較的動きやすいπ原子を当該ベンゼン環平面に垂直方向に含むため、かかるπ電子の作用により環平面方向の屈折率が高められるものと推察される。   The reason why the compound represented by the formula (1) exhibits a high refractive index is probably due to the large proportion of benzene rings contained in one molecule. That is, since the benzene ring includes a relatively easy π atom in the direction perpendicular to the benzene ring plane, it is assumed that the refractive index in the ring plane direction is increased by the action of the π electron.

<ベンジルフェニルフェノキシ化合物の製造方法>
本発明のベンジルフェニルフェノキシ化合物の製造方法は、ベンジルオルソフェニルフェノール(又はベンジルパラフェニルフェノール)のヒドロキシル基(OH基)に対し、ジアクリル酸無水物又はジメタクリル酸無水物をエステル化反応させることにより、当該OH基にアクリレート基を導入して得られる。反応機構の詳細は実施例にて詳述する。なお、実施例1〜4においては、t、u、a1、a2及びa3がいずれも0の場合の合成手順を説明するが、これらの各文字が1以上であっても同様であり、下記の合成手順以外の合成方法として、フィッシャーエステル化反応、エステル交換反応、塩化(メタ)アクリルによるショッテン・バウマン反応など、各種のエステル化反応でもベンジルフェニルフェノキシ化合物を得ることができる。また、ベンゼン環とヒドロキシル基(OH基)との間にポリエチレングリコール鎖又はポリプロピレングリコール鎖を有していてもよい。なお、ベンジルオルソフェニルフェノール(又はベンジルパラフェニルフェノール)のヒドロキシル基(OH基)と、当該ヒドロキシル基に結合するベンゼン環との間に、炭素数1〜3のアルカンジイル基を有する場合、及び(ポリ)オキシエチレン鎖又は(ポリ)オキシプロピレン鎖を有する場合も、同様の製造方法で製造することができる。
<Method for producing benzylphenylphenoxy compound>
The method for producing a benzylphenylphenoxy compound of the present invention comprises subjecting a hydroxyl group (OH group) of benzylorthophenylphenol (or benzylparaphenylphenol) to an esterification reaction of diacrylic anhydride or dimethacrylic anhydride. The OH group is obtained by introducing an acrylate group. Details of the reaction mechanism will be described in detail in Examples. In Examples 1 to 4, the synthesis procedure when t, u, a1, a2, and a3 are all 0 will be described, but the same applies even if each of these characters is 1 or more. As a synthesis method other than the synthesis procedure, the benzylphenylphenoxy compound can be obtained by various esterification reactions such as a Fischer esterification reaction, a transesterification reaction, and a Schotten-Baumann reaction with (meth) acrylic chloride. Further, it may have a polyethylene glycol chain or a polypropylene glycol chain between the benzene ring and the hydroxyl group (OH group). In addition, when having a C1-C3 alkanediyl group between the hydroxyl group (OH group) of benzyl orthophenyl phenol (or benzyl paraphenyl phenol) and the benzene ring couple | bonded with the said hydroxyl group, and ( Even when it has a poly) oxyethylene chain or a (poly) oxypropylene chain, it can be produced by the same production method.

<光学材料用樹脂組成物>
本発明の光学材料用樹脂組成物は、上記ベンジルフェニルフェノキシ化合物を少なくとも含む。かかる化合物を含むことにより、光学材料用樹脂組成物を液状物として調製しやすいという優れた効果を示す。液状物として調製しやすいことにより、硬化前の形状を自由に制御することができる。
<Resin composition for optical material>
The resin composition for an optical material of the present invention contains at least the benzylphenylphenoxy compound. By including such a compound, an excellent effect of easily preparing the resin composition for optical materials as a liquid material is exhibited. By being easy to prepare as a liquid material, the shape before curing can be freely controlled.

上記ベンジルフェニルフェノキシ化合物は、光学材料用樹脂組成物100重量部に対し、60重量部以上100重量部未満で含むことが好ましい。このような割合で含まれることにより、光学材料用樹脂組成物の屈折率を顕著に高め得るという優れた効果を示す。上記ベンジルフェニルフェノキシ化合物の含有量は、65重量部以上90重量部以下が好ましく、より好ましくは70重量部以上85重量部以下である。   The benzylphenylphenoxy compound is preferably contained in an amount of 60 parts by weight or more and less than 100 parts by weight with respect to 100 parts by weight of the optical material resin composition. By being contained in such a ratio, the excellent effect that the refractive index of the resin composition for optical materials can be remarkably raised is shown. The content of the benzylphenylphenoxy compound is preferably 65 parts by weight or more and 90 parts by weight or less, and more preferably 70 parts by weight or more and 85 parts by weight or less.

本発明の光学材料用樹脂組成物は、ベンジルフェニルフェノキシ化合物と共重合可能なモノマーであって、かつアクリル酸誘導体及びメタクリル酸誘導体からなる群より選ばれる1種以上のモノマーを含むことが好ましい。このようなモノマーをベンジルフェニルフェノキシ化合物とともに硬化させることにより、硬化物の硬度を高め得る。ここで、アクリル酸誘導体としては、アクリル酸、アクリル酸エステル、(ポリ)オキシエチレン鎖を有するアクリル酸及び(ポリ)オキシプロピレン鎖を有するアクリル酸が挙げられる。また、メタクリル酸誘導体としては、メタクリル酸、メタクリル酸エステル、(ポリ)オキシエチレン鎖を有するメタクリル酸及び(ポリ)オキシプロピレン鎖を有するメタクリル酸が挙げられる。   The resin composition for an optical material of the present invention preferably contains at least one monomer selected from the group consisting of an acrylic acid derivative and a methacrylic acid derivative, which is a monomer copolymerizable with the benzylphenylphenoxy compound. By curing such a monomer together with a benzylphenylphenoxy compound, the hardness of the cured product can be increased. Here, examples of the acrylic acid derivative include acrylic acid, acrylic acid ester, acrylic acid having a (poly) oxyethylene chain, and acrylic acid having a (poly) oxypropylene chain. Examples of methacrylic acid derivatives include methacrylic acid, methacrylic acid esters, methacrylic acid having a (poly) oxyethylene chain, and methacrylic acid having a (poly) oxypropylene chain.

本発明の光学材料用樹脂組成物は、光重合開始剤又は熱重合開始剤のいずれかを含有することが好ましい。かかる開始剤のいずれかを含むことにより、熱又は光を照射したときに、ベンジルフェニルフェノキシ化合物の共重合反応を進行させることができ、共重合の開始のタイミングを適切に制御し得るというメリットがある。   The resin composition for an optical material of the present invention preferably contains either a photopolymerization initiator or a thermal polymerization initiator. By including any of these initiators, when irradiated with heat or light, the copolymerization reaction of the benzylphenylphenoxy compound can proceed, and there is an advantage that the timing of the initiation of copolymerization can be appropriately controlled. is there.

<硬化物>
本発明の硬化物は、上記光学材料用樹脂組成物を共重合させて得られるものである。かかる共重合は、光によって開始する重合反応であることが好ましい。光硬化は、熱硬化に比して、重合開始のタイミングを制御しやすいからである。
<Hardened product>
The cured product of the present invention is obtained by copolymerizing the above resin composition for optical materials. Such copolymerization is preferably a polymerization reaction initiated by light. This is because the photocuring is easier to control the timing of the polymerization start than the thermosetting.

かかる硬化物は、25℃における屈折率が1.570以上であることが好ましい。このような屈折率を示す材料が各種用途に要求されているからである。この屈折率は、1.585以上であることが好ましく、より好ましくは1.590以上である。   Such a cured product preferably has a refractive index of 1.570 or more at 25 ° C. This is because materials having such a refractive index are required for various applications. This refractive index is preferably 1.585 or more, and more preferably 1.590 or more.

<用途>
本発明の硬化物は、液晶テレビ、ノートパソコン、携帯ゲーム機、携帯電話等の液晶表示装置に用いるプリズムシート、液晶表示装置の表面に施すハードコート剤、眼鏡レンズ、光ファイバー等の分野で有用である。
<Application>
The cured product of the present invention is useful in the fields of prism sheets used in liquid crystal display devices such as liquid crystal televisions, notebook computers, portable game machines, and mobile phones, hard coat agents applied to the surface of liquid crystal display devices, spectacle lenses, and optical fibers. is there.

実施例を挙げて本発明を説明する。実施例1〜4では、本発明のベンジルフェニルフェノキシ化合物(ベンジルフェニルフェノール(メタ)アクリル酸エステル)を合成した。   The present invention will be described with reference to examples. In Examples 1 to 4, the benzylphenylphenoxy compound (benzylphenylphenol (meth) acrylate) of the present invention was synthesized.

(実施例1)
シクロヘキサン200gに対し、下記式(2)で表されるベンジルオルソフェニルフェノール100gと、メトキノン0.5gと、2,6−ジ−tert−ブチル−4−メチルフェノール0.2gと、ハイドロキノン0.05gと、メタンスルホン酸7gとを溶解させた。

Figure 2015120681
Example 1
200 g of cyclohexane, 100 g of benzyl orthophenylphenol represented by the following formula (2), 0.5 g of methoquinone, 0.2 g of 2,6-di-tert-butyl-4-methylphenol, and 0.05 g of hydroquinone And 7 g of methanesulfonic acid were dissolved.
Figure 2015120681

上記で得られた反応液を70℃に加熱した後、53.3gのジアクリル酸無水物を5分間滴下した。滴下終了後、70〜75℃に保ちながら7時間攪拌することにより、エステル化反応させた。反応終了後の反応液を、20重量%の水酸化ナトリウム水溶液で中和することにより、有機層を濃縮し、下記式(3)で表されるベンジルオルソフェニルフェノールアクリル酸エステル(液体)を得た。

Figure 2015120681
After the reaction solution obtained above was heated to 70 ° C., 53.3 g of diacrylic anhydride was added dropwise for 5 minutes. After completion of dropping, the mixture was stirred for 7 hours while maintaining the temperature at 70 to 75 ° C. to cause esterification. The reaction solution after completion of the reaction is neutralized with a 20% by weight aqueous sodium hydroxide solution to concentrate the organic layer, thereby obtaining a benzyl orthophenylphenol acrylate ester (liquid) represented by the following formula (3). It was.
Figure 2015120681

上記化合物の同定は、プロトン核磁気共鳴分光法により行なった。結果を以下に示す。
1H NMR(CDCl3、δ in ppm)7.20−7.38(m,13H),6.32(d,1H),6.08(dd,1H),5.84(d,1H),3.91(s,2H)
The above compound was identified by proton nuclear magnetic resonance spectroscopy. The results are shown below.
1H NMR (CDCl3, δ in ppm) 7.20-7.38 (m, 13H), 6.32 (d, 1H), 6.08 (dd, 1H), 5.84 (d, 1H), 3 .91 (s, 2H)

(実施例2)
実施例1における「53.3gのジアクリル酸無水物」を「65.1gのジメタクリル酸無水物」に代えたことが異なる他は、実施例1と同様にして下記式(4)で表されるベンジルオルソフェニルフェノールメタクリル酸エステル(液体)を得た。

Figure 2015120681
上記化合物の同定は、プロトン核磁気共鳴分光法により行なった。結果を以下に示す。
1H NMR(CDCl3、δ in ppm)7.20−7.38(m,13H),6.06(s,1H),5.52(s,1H),3.91(s,2H),1.79(s,3H) (Example 2)
It is represented by the following formula (4) in the same manner as in Example 1 except that “53.3 g diacrylic anhydride” in Example 1 is changed to “65.1 g dimethacrylic anhydride”. Benzyl orthophenylphenol methacrylate (liquid) was obtained.
Figure 2015120681
The above compound was identified by proton nuclear magnetic resonance spectroscopy. The results are shown below.
1H NMR (CDCl3, δ in ppm) 7.20-7.38 (m, 13H), 6.06 (s, 1H), 5.52 (s, 1H), 3.91 (s, 2H), 1 .79 (s, 3H)

(実施例3)
シクロヘキサン70gに対し、下記式(5)で表されるベンジルパラフェニルフェノール30gと、メトキノン0.2gと、2,6−ジ-tert-ブチル−4−メチルフェノール0.07gと、ハイドロキノン0.02gと、メタンスルホン酸2gとを溶解させた。

Figure 2015120681
(Example 3)
70 g of cyclohexane, 30 g of benzylparaphenylphenol represented by the following formula (5), 0.2 g of methoquinone, 0.07 g of 2,6-di-tert-butyl-4-methylphenol, and 0.02 g of hydroquinone And 2 g of methanesulfonic acid were dissolved.
Figure 2015120681

上記で得られた反応液を70℃に加熱した後、16.0gのジアクリル酸無水物を5分間滴下した。滴下終了後、70〜75℃で5時間攪拌することにより、エステル化反応させた。反応終了後の反応液を、20重量%の水酸化ナトリウム水溶液で中和することにより、有機層を濃縮し、下記の式(6)で表されるベンジルパラフェニルフェノールアクリル酸エステル(固体)を得た。

Figure 2015120681
上記化合物の同定は、プロトン核磁気共鳴分光法により行なった。結果を以下に示す。
1H NMR(CDCl3、δ in ppm):7.16−7.53(m,13H),6.52(d,1H),6.30(dd,1H),5.99(d,1H),3.96(s,2H) The reaction solution obtained above was heated to 70 ° C., and then 16.0 g of diacrylic anhydride was added dropwise for 5 minutes. After completion of dropping, the mixture was stirred at 70 to 75 ° C. for 5 hours to cause esterification. The reaction mixture after completion of the reaction is neutralized with 20% by weight aqueous sodium hydroxide solution to concentrate the organic layer, and benzyl paraphenylphenol acrylate ester (solid) represented by the following formula (6) is obtained. Obtained.
Figure 2015120681
The above compound was identified by proton nuclear magnetic resonance spectroscopy. The results are shown below.
1H NMR (CDCl3, δ in ppm): 7.16-7.53 (m, 13H), 6.52 (d, 1H), 6.30 (dd, 1H), 5.99 (d, 1H), 3.96 (s, 2H)

(実施例4)
実施例3における「16.0gのジアクリル酸無水物」を「19.5gのジメタクリル酸無水物」に代えたことが異なる他は、実施例3と同様にして下記式(7)で表されるベンジルオルソフェニルフェノールメタクリル酸エステル(固体)を得た。

Figure 2015120681
上記化合物の同定は、プロトン核磁気共鳴分光法により行なった。結果を以下に示す。
1H NMR(CDCl3、δ in ppm):7.17−7.54(m,13H),6.26(s,1H),5.72(s,1H),3.96(s,2H),2.01(s,3H) Example 4
It is represented by the following formula (7) in the same manner as in Example 3 except that “16.0 g diacrylic anhydride” in Example 3 is changed to “19.5 g dimethacrylic anhydride”. Benzyl orthophenylphenol methacrylate (solid) was obtained.
Figure 2015120681
The above compound was identified by proton nuclear magnetic resonance spectroscopy. The results are shown below.
1H NMR (CDCl3, δ in ppm): 7.17-7.54 (m, 13H), 6.26 (s, 1H), 5.72 (s, 1H), 3.96 (s, 2H), 2.01 (s, 3H)

(特性評価)
実施例1〜4のベンジルフェニルフェノキシ化合物に対し、表1の左欄に示す物性評価を行なった。
(Characteristic evaluation)
The physical properties shown in the left column of Table 1 were evaluated for the benzylphenylphenoxy compounds of Examples 1 to 4.

Figure 2015120681
表1中「外観」は、目視による外観評価である。
表1中「屈折率」は、アッベ屈折計(アタゴ株式会社製)を用いて、25℃における屈折率を測定した値である。
表1中「粘度」は、E型粘度計(東機産業株式会社製)により、25℃における粘度を測定した値である。
表1中「融点」は、示差走査熱量計(株式会社リガク製)により測定した値である。
Figure 2015120681
“Appearance” in Table 1 is visual evaluation of appearance.
In Table 1, “refractive index” is a value obtained by measuring a refractive index at 25 ° C. using an Abbe refractometer (manufactured by Atago Co., Ltd.).
In Table 1, “viscosity” is a value obtained by measuring the viscosity at 25 ° C. with an E-type viscometer (manufactured by Toki Sangyo Co., Ltd.).
In Table 1, “melting point” is a value measured by a differential scanning calorimeter (manufactured by Rigaku Corporation).

(実施例5〜10)
以下の表2に示す配合比で各材料を混合することにより、光学材料用樹脂組成物を作製した。表2中、組成物の含有量を表す数値は質量部を意味する。
(Examples 5 to 10)
A resin composition for an optical material was prepared by mixing each material at a blending ratio shown in Table 2 below. In Table 2, the numerical value representing the content of the composition means parts by mass.

Figure 2015120681
※1 JER 1001:ビスフェノールA型固形エポキシ樹脂(三菱化学株式会社製)
※2 エトキシ化オルソフェニルフェノールアクリレート(新中村化学工業株式会社製)
※3 ダロキュア1173:光重合開始剤(BASFジャパン株式会社製)
※4 「硬化性」は、紫外線照射装置(フュージョンUVシステムズジャパン株式会社製)を用いて1000mJ/cmの紫外線を照射することにより、組成物を重合させて硬化物を形成し、当該硬化物を指触で評価した結果である。完全に膜状に硬化している場合に「◎」、完全に膜状に硬化しているとまでは言えずとも十分な硬化が認められた場合に「○」と評価した。
表2中「屈折率」及び「粘度」は、表1の評価方法と同様の方法により評価した結果である。
表2の「粘度」及び「屈折率」に示す結果から、本発明の光学材料用樹脂組成物は、液状であることから希釈性に優れ、かつ屈折率が高いという性質を示すことが明らかとなった。さらに、実施例5〜10の「硬化性」の結果から、本発明の光学材料用樹脂組成物を光硬化させたときに、十分な硬化性を有することも実証された。
Figure 2015120681
* 1 JER 1001: Bisphenol A type solid epoxy resin (Mitsubishi Chemical Corporation)
* 2 Ethoxylated orthophenylphenol acrylate (manufactured by Shin-Nakamura Chemical Co., Ltd.)
* 3 Darocur 1173: Photopolymerization initiator (manufactured by BASF Japan Ltd.)
* 4 “Curability” means that a cured product is formed by polymerizing the composition by irradiating with 1000 mJ / cm 2 of ultraviolet rays using an ultraviolet irradiation device (Fusion UV Systems Japan Co., Ltd.). It is the result of having evaluated by touch. The film was evaluated as “◎” when completely cured into a film, and “◯” when sufficient curing was observed even though it was not completely cured into a film.
In Table 2, “refractive index” and “viscosity” are the results of evaluation by the same method as the evaluation method of Table 1.
From the results shown in “Viscosity” and “Refractive index” in Table 2, it is clear that the resin composition for optical materials of the present invention is liquid and has excellent dilutability and high refractive index. became. Furthermore, from the results of “curability” in Examples 5 to 10, it was also demonstrated that the resin composition for optical materials of the present invention has sufficient curability when photocured.

本発明の化合物を含む組成物及びその硬化物は、液晶テレビ、ノートパソコン、携帯ゲーム機、携帯電話等の液晶表示装置に用いるプリズムシート、液晶表示装置の表面に施すハードコート剤、眼鏡レンズ、光ファイバー等に好適に用いることができ、産業上有用である。   A composition containing the compound of the present invention and a cured product thereof are a prism sheet used in a liquid crystal display device such as a liquid crystal television, a notebook computer, a portable game machine, and a mobile phone, a hard coat agent applied to the surface of the liquid crystal display device, a spectacle lens, It can be suitably used for optical fibers and the like and is industrially useful.

Claims (9)

下記式(I)で表されるベンジルフェニルフェノキシ化合物。
Figure 2015120681
[前記式(I)中、
1及びR2は、それぞれ、水素原子又はメチル基を表す。
t及びuは、それぞれ、0〜3の整数を表す。
a、Rb及びRcは、それぞれ、炭素数1〜10の炭化水素基を表す。
a1、a2及びa3は、0〜4の整数を表す。]
A benzylphenylphenoxy compound represented by the following formula (I).
Figure 2015120681
[In the formula (I),
R 1 and R 2 each represent a hydrogen atom or a methyl group.
t and u each represent an integer of 0 to 3.
R a , R b and R c each represent a hydrocarbon group having 1 to 10 carbon atoms.
a1, a2 and a3 represent an integer of 0 to 4; ]
下記式(II)で表される請求項1に記載のベンジルフェニルフェノキシ化合物。
Figure 2015120681
[前記式(II)中、
1は、水素原子又はメチル基を表す。
uは、0〜3の整数を表す。
a、Rb及びRcは、それぞれ、炭素数1〜10の炭化水素基を表す。
a1、a2及びa3は、0〜4の整数を表す。]
The benzylphenylphenoxy compound of Claim 1 represented by following formula (II).
Figure 2015120681
[In the formula (II),
R 1 represents a hydrogen atom or a methyl group.
u represents an integer of 0 to 3.
R a , R b and R c each represent a hydrocarbon group having 1 to 10 carbon atoms.
a1, a2 and a3 represent an integer of 0 to 4; ]
下記式(III)で表される請求項2に記載のベンジルフェニルフェノキシ化合物。
Figure 2015120681
[前記式(III)中、R1は水素原子又はメチル基を表す。]
The benzylphenylphenoxy compound according to claim 2 represented by the following formula (III).
Figure 2015120681
[In the formula (III), R 1 represents a hydrogen atom or a methyl group. ]
請求項1〜3に記載のベンジルフェニルフェノキシ化合物を含む光学材料用樹脂組成物。   The resin composition for optical materials containing the benzyl phenyl phenoxy compound of Claims 1-3. 請求項4に記載の光学材料用樹脂組成物100重量部に対し、60重量部以上100重量部未満の前記ベンジルフェニルフェノキシ化合物を含む、請求項4に記載の光学材料用樹脂組成物。   The resin composition for optical materials according to claim 4, comprising 60 parts by weight or more and less than 100 parts by weight of the benzylphenylphenoxy compound with respect to 100 parts by weight of the resin composition for optical materials according to claim 4. さらに、前記ベンジルフェニルフェノキシ化合物と共重合可能なモノマーであって、かつアクリル酸誘導体及びメタクリル酸誘導体からなる群より選ばれる1種以上のモノマーを含有する、請求項4又は5に記載の光学材料用樹脂組成物。   The optical material according to claim 4 or 5, further comprising at least one monomer selected from the group consisting of an acrylic acid derivative and a methacrylic acid derivative, which is a monomer copolymerizable with the benzylphenylphenoxy compound. Resin composition. 25℃における屈折率が1.570以上である、請求項4〜6のいずれか一項記載の光学材料用樹脂組成物。   The resin composition for optical materials according to any one of claims 4 to 6, wherein a refractive index at 25 ° C is 1.570 or more. さらに、光重合開始剤又は熱重合開始剤を含有する、請求項4〜7のいずれか一項記載の光学材料用樹脂組成物。   Furthermore, the resin composition for optical materials as described in any one of Claims 4-7 containing a photoinitiator or a thermal-polymerization initiator. 請求項4〜8のいずれか一項記載の光学材料用樹脂組成物を、光又は熱によって共重合させた硬化物。   A cured product obtained by copolymerizing the resin composition for an optical material according to any one of claims 4 to 8 with light or heat.
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